The Siemens 5SL6302-7CC is a SENTRON miniature circuit breaker (MCB) — 3-pole, C-curve, rated 2 A, with a 6 kA breaking capacity per EN 60898 at 400 V AC.
Mounting position is unrestricted — vertical, horizontal, upside-down, all fine. The IP20 rating (with conductors connected) is standard for enclosed distribution boards; it's not a standalone outdoor part. Sealable, halogen-free, silicon-free — relevant for panels in sensitive environments like hospitals or labs where outgassing matters.
The 5SL4363-7 is dimensionally identical (same 76 mm depth, 54 mm width, 90 mm height, same 3-pole C-curve footprint) and shares the same 400 V AC rated voltage, same temperature range, same IP20 rating. The critical difference: the 5SL4363-7 carries a 10 kA breaking capacity per both EN 60898 and IEC 60947-2, versus this part's 6 kA. If your panel's prospective short-circuit current (PSCC) at the board exceeds 6 kA, you need the 5SL4363-7. If it's 6 kA or below, this part drops in without rewiring — same rail, same busbar pitch, same termination.